For about 6 to 7 months, than C2D is dead. Than what...?
Exactly, while it may be likely, it's not a certainty that a C2D is going to be used, unless Apple just don't mind releasing an update that will last 6 months.
But that puts further doubt, why did they not update it with the MBPs? It could well be supply issues or not wishing to detract (in the general public's perception) from the newly released ipad.
And don't forget that the MBA may not necessarily follow suit with MBP+MB, it's pitched as a
premium notebook and may well be blazing another trail (as it has done before).
I just hope that this Macbook update is the explanation for the product code on the Aus shipment recently reported. I want to see the MBA refreshed at WWDC.